SNR (RxMER) and DOCSIS 3.1 Modems

Welcome to another engaging episode of Get Your Tech On, titled "Your Questions, Our Answers: SNR (RxMER) and DOCSIS 3.1 Modems." In this episode, we delve into listener queries about DOCSIS technology, focusing on Signal-to-Noise Ratio (SNR), RxMER, and the details of DOCSIS 3.1 modems. Our host, Brady Volpe, founder of NimbleThis and The Volpe Firm, is joined by the highly knowledgeable John Downey, CMTS Technical Leader at Cisco Systems. Together, they explore the intricacies of these complex topics, helping to shed light on the common RF issues within HFC networks. Whether you're a cable technician, network engineer, or just a curious viewer, this episode is sure to enhance your understanding of these technical subjects. Watch as we unravel the mysteries of SNR, RxMER, and DOCSIS 3.1 modems and answer some of the most asked questions in the field. Don't forget to hit the like button if you find the video informative, and share it with others who may find it useful. For more in-depth discussions on all things DOCSIS, make sure to subscribe to our channel and hit the notification bell. Your tech journey continues here! #GetYourTechOn #DOCSIS #SNR #RxMER #DOCSIS3.1 #CableTV #HFCNetworks #CiscoSystems --- https://volpefirm.com/blog-2/ Links / Upcoming events: https://volpefirm.com/broadband-event/ DOCSIS Gear: https://all-things-docsis.creator-spr... 00:00:00 Introduction 00:02:44 Reboots & FEC (Uncorrectable Codeword Errors) 00:15:08 How to calculate FEC 00:21:20 SNR (RxMER) and DOCSIS 3.1 Modems 00:23:23 Minimum RxMER per subcarrier (OFDM) 00:26:00 Why you need PMA 00:28:50 Does FEC increase CPU? 00:30:44 What are the causes of downstream uncorrectable errors? 00:37:17 Number of Bonded channels and modem speed 00:47:32 DOCSIS 3.1+ (The PI Modem Returns!) 00:49:04 Transition from DOCSIS 3.0 to 3.1 Considerations 00:57:00 Wrap up